I think people are getting their panties in a twist because the patch date ranges on the dev roadmap pdf are slightly different than the outline pdf. I would follow the outline because it's more clear.

Patch 1.20 was slated for late November/early December as stated on the second to last page of the outline. Assuming SE still releases Patch 1.20 on December 14th, this still falls on the very last day of "early December" for them. Therefore, there was no delay based on the schedule and I don't know why Yoshida would even say the patch was delayed to begin with. Going based on that, Patch 1.21 should still be released at the scheduled period of "early February."